Sökning: "Trucks"
Visar resultat 16 - 20 av 186 avhandlingar innehållade ordet Trucks.
16. Aerodynamics of two trucks driving in close-proximity
Sammanfattning : There are several factors driving the development of vehicles with higher efficiency in society, chief among them are the emissions of greenhouse gases and their contribution to global warming. Therefore, there is a strong incentive to improve heavy-duty trucks' energy efficiency, supported by new legislation. LÄS MER
17. Perception of Sound and Vibration in Heavy Trucks
Sammanfattning : Interior truck cabin sound has for some time been a concern for manufacturers. Today reasonably low sound pressure levels have been achieved using passive absorption. However low frequency sound is difficult to passively absorb and will hence dominate the interior sound. LÄS MER
18. Investigation of Wheel Housing Flow on Heavy Trucks
Sammanfattning : Increasing fuel prices and demands for reductions of emissions have led to a considerably increased interest in developing more efficient vehicles. Besides designing more efficient power units with lower fuel consumption and emission levels it is possible to increase the total efficiency of the vehicle by aerodynamic optimization. LÄS MER
19. Catalytic Reduction of NOx on Heavy-Duty Trucks
Sammanfattning : The objective of the work described in this thesis is to identify the principles and parts of an aftertreatment system for the catalytic NOx reduction for heavy-duty diesel vehicles, and to demonstrate such a system in full-scale. The reducing agent is diesel fuel. LÄS MER
20. Look-ahead Control of Heavy Trucks utilizing Road Topography
Sammanfattning : The power to mass ratio of a heavy truck causes even moderate slopes to have a significant influence on the motion. The velocity will inevitable vary within an interval that is primarily determined by the ratio and the road topography. LÄS MER